RYAN HUTTON/ Staff photo
Jed Fiato, left, of Concord, and Karen Simmons, right, of Volunteer New Hampshire practice leapfrogging each other while using a compass to navigate during a recent ALERT training at the Matthew Thornton Elementary School.

180407LONDONDERRYRHUNHALERT005Londonderry MagazineMatthew Thornton Elementary SchoolRich SemaskiALERTA Londonderry Emergency Response Team